package com.hue.springcloud.controller;

import com.hue.springcloud.lb.impl.MyLoadBalanced;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import com.hue.springcloud.entites.CommonResult;
import com.hue.springcloud.entites.Payment;

import java.util.List;

@RestController
@Slf4j
public class OrderController {
//    public static final String PAYMENT_URL="http://localhost:8001";
    //通过微服务名来访问服务
    public static final String PAYMENT_URL="http://CLOUD-PAYMENT-SERVICE";
    @Autowired
    private RestTemplate restTemplate;
    @Autowired
    private MyLoadBalanced myLoadBalanced;
    @Autowired
    private DiscoveryClient discoveryClient;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment){
        return restTemplate.postForObject(PAYMENT_URL+"/payment/create", payment,CommonResult.class );
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPaymentById(@PathVariable("id")long id){
        return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
    }

    @GetMapping("/consumer/payment/get2/{id}")
    public CommonResult<Payment> getPaymentById2(@PathVariable("id")long id){
        ResponseEntity<CommonResult> en =
                restTemplate.getForEntity(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
        if(en.getStatusCode().is2xxSuccessful()){
            return en.getBody();
        }else {
            return new CommonResult(444,"错误");
        }
    }

    @GetMapping("/consumer/payment/lb")
    public String getPaymentLB(){
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        if (instances == null || instances.size()==0) {
            return null;
        }
        ServiceInstance service = myLoadBalanced.getService(instances);
        return restTemplate.getForObject(service.getUri()+"/payment/lb",String.class);
    }

    @GetMapping("/consumer/payment/zipkin")
    public String zipkin(){
        return restTemplate.getForObject(PAYMENT_URL+"/payment/zipkin",String.class);
    }

}
